Tool-holder for stone-working machines.



' wi finesses I No. 871,944. PATENTED NOV. 26, 1907. H. H. MERGER. TOOLHOLDER FOR STONEWORKING MACHINES.

APPLICATION FILED JULY 12, 1906 v 0. M. aa wz7m.

UNITED STATES PATENT OFFICE.

HENRY H. MERGER, OF CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVANMACHINERY COMPANY, OF OLAREMONT, NEIV HAMPSHIRE, A CORPORATION OF MAINE.

TOOL-HOLDER FOR STONE-WORKING MACHINES.

Specification of Letters Patent.

Patented Nov. 26, 1907'.

To all whom it may concern:

Be it known that I, HENRY H. MERGER, a citizen of the United States,residing at Olaremont, in the county of Sullivan and State of NewHampshire, have invented an Improvement in lool-I'lolders for Stone-Working Machines, of which the following description, in connection withthe accompanying drawings, is a specification, like letters on thedrawings representing like parts.

My invention relates to tool holders for stone Working machines and isherein shown specifically as applied to the tool-clamping cross-head ofa stone channeling machine, although not necessarily limited in itsapplication to the particular type of apparatus.

My invention will be best understood by reference to the followingdescription, when taken in connection with the accompanying illustrationof one specific embodiment thereof, while its scope will be moreparticularly pointed out in the appended claims.

In the drawings,Figure 1 is a side elevation of a portion of achanneling machine embodying one form of my invention; Fig. 2 is a frontelevation on an enlarged scale of the cross-head of the channelingmachine shown in Fig. 1; Fig. 3 is a longitudinal section taken on theline S -3 in Fig. 2; Fig. 4 is a transverse section taken on the line 44 in Fig. 2; Fig. 5 is a transverse section taken on the line 55 in Fig.2, and Fig. 6 is an end view of the crosshead.

In the drawings I have shown my invention as applied to a well-knowntype of channeling machine of which I have deemed it necessary to showmerely a portion of the operative parts comprising the engine cylin der1, the main frame 2, the tool-carrylng cross-head 3, the connectingpiston-rod 4, and the side guides 5, in which latter are the engine andthe cross-head vertically adjustable by the usual adjusting means (notshown).

The cross-head, as usual, is provided with the side webs 6, which engagewith the crosshead guides and at its upper end with the socket portion 7having a tapered aperture in which is seated the tapered end of theiston-rod 4, the same being held in position by the key 8.

As is usual in this class of devices the cross-head is so formed andconstructed as to hold securely clamped the ends of a series or gang oftools which are here shown as three in number 9, 10 and 11, but thenumber of these may obviously be increased or diminished as desired andmay have any shape or construction wished. These tools which are ofgenerally rectangular cross-section are arranged side by side upon theouter or toolcarrying face 12 of the crosshead and are there heldsecurely clamped by the clamping cap 13. For this purpose the cross-headis formed with a longitudinal raised portion 14 which presents ashoulder or face 15 to the outer tool 9 and against this clamping faceupon the crosshead the tools are pressed or crowded over by engagementwith an inturned shoulder, 16, of the cap, engaging the other outermember 11 of the gang. The clamping cap is drawn laterally against theseries of tools by a wedge 17, which is forced between the inturned andinclined shouldered portion 18 of the cap and the outer face 19 of theout-turned cross-head portion 14.

From the tool-carrying face of the cross head near one of its lowercorners projects an outturned lug 20 and near the opposite corner thelug 21 of lesser height, the said lugs engaging with the lower edge ofthe clamping cap and preventing downward movement of the latter. Thetools are clamped in position by forcing the wedge downwardly and thenclamping the cap to the cross-head by means of the two sets of clampingbolts 22, 23, the latter being provided with tapered nuts or threadedbushings 24 seated in tapered apertures in the under part of thecrosshead. The clamping bolts pass through laterally elongated aperturesin the cap to permit the necessary lateral adjustment of the latter.

At their upper or abutting ends the several members of the tool gangabut against a shoulder 25 upon the cross-head. In ordinary cross-headclamps with which I am familiar the end abutment upon the cross-headjoins the outer tool-carrying face of the crosshead at right angles.Under these circumstances and when the hard head of the tool contactsdirectly with the relatively softer metal of the cross-hcad thecontinued pounding action of the tool end upon the abutment quicklyupsets or peens over the metal of the abutment, tending to force aportion of it into the cornerbetween the abutting surface and the outertool-carrying face. On account of the great force of the blow which isdealt 5 by the tool of the ordinary channeling machine and the rapiditywith which its blows -are delivered, the continued upsetting of themetal into the confined space afforded at the corner of the abutment,very soon springs the body of the cross-head longitudinally, throwing itout of alinement. This obviously places undue resistance upon theengine, causing the reciprocating parts to bind and materially decreasesthe efficiency of the machine. In the described embodiment of myinvention I obviate this difficulty by under cutting or relieving theinner end of the abutting face at or adjacent its junction with thelongitudinal tool-bearing face of the crosshead, so that the metal whichwould otherwise be forced into the corner is forced into the groove orrecess which is out under the abutment, thereby providing thereat meansfor receiving the upset metal of the abutment without injurious, effectupon the alinement of the cross-head.

In the illustrated embodiment of my invention the abutting face 25 isundercut transversely by the inclined groove 26 as far as thelongitudinal bearing shoulder 15 and for a sufficient distance tounderlie the ends of the several tools.

During the action of the machine any tendency to upset the relativelysoft metal of the 35 abutment cannot bend the body of the cross head orotherwise injuriously affect the same, since the upset metal is free toenter the relief groove 26.

WVhile I have shown and described one form of my invention, it is tobeunderstood that I am not limited to the details of construction orform or relative arrangement of parts shown, but that extensivedeviations therefrom may be made Without departing 45 from the spirit ofmy invention.

Claim 1. A stone channeling machine having a cross-head, guides in whichthe same is slid able, a fiat outer tool-receiving face on thecross-head, a raised longitudinal abutment against which the tool isadapted to be laterally pressed, a clamping cap having an inturnedabutting shoulder to press the tool or tools against the cross-headabutment, a second inturned shoulder on the cap, a wedge between thesaid second shoulder and the cross-head abutment to draw the clampagainst the tool or tools, clamping means for fixing the clamp inposition, a cross abutment on the cross-head for the ends of the tools,there being a shallow groove formed in the abutment at the unctionthereof with its base to receive metal upset from the abutment by theaction of the tool or tools there- 65 on, the shallowness of the grooveand the thickness of the part of the cross head having the said toolreceiving face being such that a firm, non-springing support is affordedfor the tool or tools 2. In a stone working machine, a reciprocatingtool-carrying cross-head and suitable guides in which the same isslidably mountod, said cross-head presenting a face against which theside of the tool is clamped, a clamping cap, an adjacent right-angledabutment for the end of the tool, there being a shallow groove formed inthe abutment at the junction thereof with its base to receive metalupset from the abutment by the action ofthe tool or tools thereon, theshallowness of the groove and the thickness of the part of the crosshead having the said tool receiving face being such that a firm,non-springing support is afforded for the tool or tools.

3. In a stone working machine, a slidable, reciprocating, tool-carryingmetallic crosshead presenting an abutment for the end of the tool,cross-head guides for the same there being a shallow groove formed inthe abutment at the junction thereof with its base to receive metalupset from the abutment by the action of the tool or tools thereon, theshallowness of the groove and the thickness of the part of the crosshead having the said tool receiving face being such that a firm,non-springing support is afforded for the tool or tools 4. In achanneling machine, a reciprocating tool-carrying metallic cross-head, asuit- '100 able guide in which the same is slidably mounted, means forclamping the tool or tools to said cross-head, an end abutment for thetools, there being a shallow groove formed in the abutment at thejunction thereof with its base to receive metal upset from the abutmentby the action of the tool or tools thereon, the shallowness of thegroove and the thickness of the part of the cross head having the saidtool receiving 110.,

face being such that a firm, non-springing support is afforded for thetool or tools.

5. In a stone working machine, a reciprocating tool carrying cross headand suitable guides in which the same is slidably mounted, said crosshead presenting a face against which the side of the tool is clamped,and a clamping cap, there being a shallow groove formed in the abutmentat the junction thereof with its base to receive metal upset from theabutment by the action of the tool thereon, said groove extending onlypartially across the abutment from side to side thereof, the shallownessof the groove, the defined extent thereof and the thickness of the partof the cross head having the tool re ceiving face being such that afirm, nonspringing support is afforded for the tool.

6. In a stone working machine, a slidable I reciprocating tool carryingmetallic cross head presenting an abutment for the end of the tools andhaving an extended portion affording a face against which the side ofthe tools is clamped, and a clamping cap adapted to be superimposed uponthe tools, the said extended portion being of greater thickness from itstool receiving face to the opposite face than the correspondingdimension of the tools placed thereon, there being a shallow grooveformed in the abutment at the junction thereof with said extendedportion, the shallowness of the groove and the thickness of the extendedportion being such as to afford a firm, rigid and non-yielding supportfor the tools.

7. In a stone-working machine, a reciprocating tool-carrying cross-head3, guides 5 in which the same is mounted for reciprocation, saidcross-head having a tool-carrying face 12 provided upon a rigid portionof said tool-carrying cross-head, a clamping cap 13 between which andthe tool-carrying face a tool or tools may be clamped, said crossheadhaving a shoulder 25 against which the tool or tools may be received,the face of said shoulder 25 being provided with a shallow transversegroove 26 to receive metal upset from the abutment by the action of thetool or tools thereon.

In testimony whereof, I have signed my 30

